Question

When two parallel lines are cut by a transversal, the angles are supplementary.

• A. corresponding
• B. alternate
• C. co-interior

Answer 1

The correct option is C co-interior

When two parallel lines are cut by a transversal, corresponding angles, alternate angles, vertically opposite angles are all equal to each other. However, co-interior angles are supplementary, i.e., their sum is equal to ${180}^{\circ }$.